{"id":6913,"date":"2019-04-04T17:57:49","date_gmt":"2019-04-04T12:27:49","guid":{"rendered":"https:\/\/www.onlinecivilforum.com\/site\/?p=6913"},"modified":"2022-12-13T11:28:55","modified_gmt":"2022-12-13T05:58:55","slug":"formwork-design-failure","status":"publish","type":"post","link":"https:\/\/onlinecivilforum.com\/site\/formwork-design-failure\/","title":{"rendered":"Reason for Formwork Design Failure"},"content":{"rendered":"\n

Reason for Formwork Design Failure<\/strong><\/h2>\n\n\n\n

Formwork Design\u00a0 may\u00a0 <\/g>fail<\/g>\u00a0 <\/g>due<\/g>\u00a0 <\/g>to<\/g>\u00a0 <\/g>many<\/g>\u00a0 reasons<\/g>.\u00a0 The\u00a0 <\/g>failure<\/g>\u00a0 primarily<\/g><\/g>\u00a0 <\/g>occurs<\/g>\u00a0 at<\/g> the time placing of concrete. Some unexpected event may cause one formwork\u00a0 <\/g>member<\/g>\u00a0 <\/g>to<\/g>\u00a0 <\/g>fail<\/g>\u00a0 <\/g>causing<\/g><\/g>\u00a0 <\/g>overloading<\/g>\u00a0 <\/g>and<\/g>\u00a0 <\/g>misalignment<\/g>\u00a0 <\/g>of<\/g>\u00a0 <\/g>another<\/g> \u00a0<\/g>formwork<\/g>\u00a0 member<\/g> ultimately leading to the collapse of the entire formwork system.<\/p>\n\n\n\n

Many such disasters have revealed the root cause of such\nfailure as <\/p>\n\n\n\n

1.Excessive loads<\/p>\n\n\n\n

2.Premature \nremoval  of  forms or shores<\/p>\n\n\n\n

3.Inadequate lateral support for the shoring members<\/p>\n\n\n\n

Improper \nStripping  And  Shore Removal<\/h3>\n\n\n\n

Premature\u00a0 stripping\u00a0 of\u00a0 forms,premature\u00a0 removal\u00a0 of\u00a0 shore\u00a0 and careless practices in reshoring can produce catastrophic results. In a case study of a MSB failure, it revealed that a portion of the fourteenth\u00a0 floor\u00a0 of\u00a0 the\u00a0 MSB tower collapsed due to the collapse of the shoring provided to\u00a0 support\u00a0 the\u00a0 concrete.\u00a0 It\u00a0 appears\u00a0 that\u00a0 the\u00a0 shoring\u00a0 was weak and the reshores were missing. The collapse of this floor resulted into impact landing of the floor directly below it which also failed and collapsed to the lower floor. This has a domino effect and by the impact load from the weight of\u00a0 upper\u00a0 floor\u00a0 debris,\u00a0 lower\u00a0 floors \u00a0also\u00a0 collapsed\u00a0 subsequently all in a short span of less than an hour.<\/p>\n\n\n\n